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Remote 16-bit I/O expander for Fm+ I

2016-01-0022

PT0553-4

02/15/16

1

PI4IOE5V9673

Features

 Operation power supply voltage from 2.3V to 5.5V

 16-bit remote I/O pins that default to inputs at power-

up

 5.5V tolerant I/Os

 SDA with 30 mA sink capability for 4000 pF buses

 Latched outputs with 25 mA sink capability for

directly driving LEDs

 Total package sink capability of 400 mA

 Active LOW open-drain interrupt output

 Low standby current

 16 programmable slave addresses using 2 address

pins

 ESD protection (4KV HBM and 1KV CDM)

 Latch-up tested (exceeds 100mA)

 Offered in three different packages: TSSOP-24 and

TQFN 4x4-24

Description

The

PI4IOE5V9673

provides

general

purpose

remote I/O expansion for most microcontroller families

via the two-line bidirectional bus (I

of the Fast-mode Plus family.

The PI4IOE5V9673 provides higher Fast-mode Plus

(Fm+) I

the output can support PWM dimming of LEDs,

higheI2C-bus drive (30 mA) so that many more devices

can be on the bus without the need for bus buffers, high

total package sink capacity (400 mA) that supports

having all 25 mA LEDs on at the same time and more

device addresses (16) are available to allow many more

devices on the bus without address conflicts.

The device consists of a 16-bit quasi-bidirectional

port and an I

low current consumption and includes latched outputs

with high current drive capability for directly driving

LEDs.

It also possesses an interrupt line (INT) which can be

connected to the interrupt logic of the microcontroller.

By sending an interrupt signal on this line, the remote

I/O can inform the microcontroller if there is incoming

data on its ports without having to communicate via the

I2C-bus. The internal Power-On Reset (POR) or

software reset sequence initializes the I/Os as inputs.

Pin Configuration

Figure 1: TSSOP-24 (Top View)

Figure 2: TQFN 4x4-24 (Top View)